AI Performance Theory: Orchestral Sound in Suno (Part2)— Methods Beyond Scale and Spatial Design English translation of #44 for Non-Japanese readers
Hello everyone.
In the previous installment of the orchestration series, we discussed scale, space, and resonance. This time, we will explore other ways of transforming orchestral sound beyond those structural factors.
A-2. Methods Other Than Changes in Scale
Emphasizing specific instruments (or sections)
Changing tone color
Specifying special techniques
Modifying musical language itself (mixing composers, eras, and stylistic categories)
1. Emphasizing Specific Instruments or Sections
There are numerous ways to do this. Since the possible vocabulary is virtually limitless, I will introduce examples I have personally used and found effective.
Using “~driven”
For example:
“Harp-driven orchestra piece”
This significantly increases the likelihood that the harp will take a leading role in the music.
Using “featuring ~”
For example:
“Featuring flute and strings”
This raises the probability that flute and strings will be prominently highlighted.
Using “double ~”
For example:
“Double harps”
This creates the effect of having two harps. You may also specify numbers directly.
Using “additional ~”
For example:
“Additional brass ensemble”
This often results in a denser brass texture, as if extra brass instruments had been added.
2. Changing Tone Color
Strings (excluding special techniques)
Warm soft strings
Produces a warm, gentle resonance.Silky strings
Suggests smooth, refined tone.Velvet strings
Similar to “silky,” but particularly effective when aiming for beautifully shaped melodic lines.Singing strings
Encourages lyrical phrasing.Layered strings
Creates a rich, layered texture.
When combined with “chords played by long notes,” sustained string harmonies are more likely to appear.
This is particularly useful when you want to maintain orchestral continuity and create symphonic cohesion between sections.Lush strings
Expressive and full-bodied. I frequently use this when I want strings to carry the melody prominently.Aerial strings
Suggests floating, spatial resonance. Effective in high registers to evoke skies or outer space.Romantic strings
Suitable for emotionally dense passages, especially slow movements in Romantic-style works.Cinematic strings
Wide and expansive; ideal for scenic or landscape-like passages.
The possibilities are nearly infinite.
A Practical Concern
Some readers may wonder:
In Suno, you cannot control exactly when or how instruments appear. If everything is fixed after generation, how can we meaningfully shape expression?
Even simple descriptors like those above already have noticeable effects. However, if you want stronger results, you can combine them structurally:
“Music is driven by silky strings”
“Featuring warm velvet strings”
Such phrasing significantly increases the probability that these tonal qualities will appear (though never with 100% certainty).
Woodwinds
Light woodwinds
Soft woodwinds
Sharp woodwinds
Brilliant woodwinds
Breathy flute
Particularly effective for characteristic solo passages.
Since jazz flute tone contains more breath component than classical flute, this works well in jazz-influenced contexts.Bird-chirping-like flute
Dark oboe
Brass
Roaring brass
A staple in symphonic climaxes.
This effect is one of the defining attractions of orchestral music. Representative examples include:
Ludwig van Beethoven: Symphony No. 5, Symphony No. 9 (Finale)
Gustav Mahler: Symphony No. 1, Symphony No. 2 (Finale)
Anton Bruckner: Symphonies No. 7–9 (Finales)
Jean Sibelius: Symphony No. 2 (Finale)
Pyotr Ilyich Tchaikovsky: 1812 Overture, Symphonies No. 4 & 5
Igor Stravinsky: The Firebird, The Rite of Spring
John Williams: Star Wars series
These are only a few examples among countless others.
However, based on my experience, this specification does not suit Baroque or Classical-style music (e.g., Bach or Mozart). Orchestral forces were smaller, and brass and percussion were not used with such overwhelming intensity. This approach is best reserved for late-Romantic or later styles.
Other useful phrases:
Warm brass choir
Heroic brass fanfare
Percussion and Others
Thunderous timpanies
Particularly effective when combined with “roaring brass.”Subtle rhythm of percussion
Crystalline harp (or piano)
Produces a transparent, sharply defined tone. I use this extremely often.
The vocabulary for modifying tone color is virtually limitless. Many of the expressions above are ones I have tested successfully, but countless others remain unexplored. This area is highly experimental—results must be discovered through trial.
3. Special Techniques
Most special techniques apply to strings. I discuss these in detail elsewhere, so here I will only list major examples:
Divisi
Pizzicato
Sul tasto
Sul ponticello
Detaché / Legato switching
Tremolo
Spiccato
Harmonics
Con sordino (mute)
Col legno
Bartók pizzicato
Glissando
Among these, particularly noticeable effects include divisi, pizzicato, sul tasto, sul ponticello, articulatory switching, tremolo, and harmonics.
Woodwinds:
Harmonics
Flutter-tonguing
Brass:
Mute
Flutter-tonguing
In my personal experience, special techniques for woodwinds and brass are rarely essential.
4. Modifying Musical Language Itself
When you specify only one style, the model tends to produce a “typical” version of that style.
If you wish to avoid strong stylistic convergence and instead create a more personal sound, mixing multiple references is highly effective.
For example:
neoclassicism
This is broad. It merely indicates “20th-century music influenced by Baroque or Classical style,” without specifying which composer.
Instead, try:
neoclassicism, baroque, Stravinsky, Bach
This narrows the stylistic direction.
Stravinsky’s Pulcinella, for instance, draws on Giovanni Battista Pergolesi and Italian Baroque models.
Example Prompt (Partial)
Igor Stravinsky
Inspired by “Pulcinella”
Giovanni Battista Pergolesi
Neoclassicism
Another example is Carl Orff’s Carmina Burana.
Orff is often classified under Primitivism.
Carmina Burana sets medieval texts and employs modal language with strong rhythmic drive.
Thus:
primitivism, medieval, Carl Orff
However, specifying only these terms is not sufficient. You would also need:
Solo and choral specifications
Text preparation
Clarification of which movement’s atmosphere you aim to evoke
Multiple references help prevent convergence toward a single style and allow exploration of hybrid sound worlds.
More Experimental Combinations
For instance:
neoromanticism, baroque, British style
This may generate a hybrid combining Romantic expressiveness, Baroque clarity of harmonic motion, and a certain noble British character.
However, there is an important caution:
Adding references increases the risk of unintended associations.
For example:
“Baroque” strongly activates associations such as Bach, counterpoint, and certain instrumentation.
“British style” may unexpectedly activate rock-related contexts.
The model interprets language internally at great speed, activating multiple associations simultaneously.
Another combination:
impressionism, renaissance, cinematic
Impressionism already contains pictorial qualities. Combined with cinematic scoring and Renaissance polyphony, it may yield gently modal, flowing textures.
The combinations are virtually infinite.
On Originality
Many creators avoid specifying composers entirely. This is a valid method and can help avoid strong stylistic imitation.
However, this does not automatically guarantee originality.
Even without explicit references, the model may generate music based on internal preset mixtures of various styles and historical languages.
In that sense, achieving pure originality is inherently challenging.
This concludes our discussion of instrumental emphasis, tone color, technique, and stylistic mixing in orchestration.
Next time, we will explore “personas related to instruments and performing ensembles” — another powerful method for reshaping orchestral sound.
Thank you very much for reading.